Document Disabling command categories (Significant-Gravitas#3669)

* feat: move task_complete command out of prompt

* fix: formatting fixes

* feat: add command disabling

* docs: document how to disable command categories

docs/usage.md

@@ -93,3 +93,13 @@ To print out debug logs:
 ``` shell
 ./run.sh --debug
 ```
+
+## Disabling Command Categories
+
+If you want to selectively disable some command groups, you can use the `DISABLED_COMMAND_CATEGORIES` config in your `.env`. You can find the list of categories in your `.env.template`
+
+For example, to disable coding related features, set it to the value below:
+
+```ini
+DISABLED_COMMAND_CATEGORIES=autogpt.commands.analyze_code,autogpt.commands.execute_code,autogpt.commands.git_operations,autogpt.commands.improve_code,autogpt.commands.write_tests
+```